| Code Value |
Definition |
| HUMAN | Human entered or modified |
| HUMAN.CALCULATED | Calculated by user |
| HUMAN.CUTANDPASTE | Cut and paste from another window by user |
| HUMAN.ESTIMATED | Estimated by user |
| MACHINE | Generated by machine |
| MACHINE.CONFIGURED | Obtained from a configuration file |
| MACHINE.FUSED | Corroborated from multiple sources |
| MACHINE.GPS | Derived from GPS receiver |
| MACHINE.MAGNETIC | Derived from magnetic sources |
| MACHINE.MENSURATED | Mensurated (from imagery) |
| MACHINE.PREDICTED | Prediction of future (e.g., a from a tracker) |
| MACHINE.SIMULATED | Produced by a simulation |